#00191D
Closest named color: Rich Navy (#001219). oklch(19.5% 0.034 208.7), rgb(0, 25, 29).
Aa
White text reads best on this color (18.15:1).
About this color
#00191D is a very dark, muted teal or cyan. In OKLCH its lightness is 20%, its chroma 0.034 and its hue 209°. Its hue sits on the cool side of the wheel. The nearest named color is Rich Navy (#001219), ΔE 0.028 away. White text reads best on it, at 18.15:1.
| Hue family | Teals and cyans |
| Lightness | very dark (20%) |
| Chroma | muted (0.034) |
| Temperature | cool |
| Nearest name | Rich Navy (#001219) |
| Black text | 1.15:1 |
| White text | 18.15:1 |
Values
| HEX | #00191D |
| RGB | rgb(0, 25, 29) |
| HSL | hsl(188, 100%, 6%) |
| OKLCH | oklch(19.5% 0.034 208.7) |
Contrast
WCAG 2 contrast ratios are the conformance target: AA needs 4.5:1 for body text and 3:1 for large text, AAA needs 7:1. APCA Lc values are supplementary guidance from the WCAG 3 drafts.
| Pair | WCAG 2 | Result | APCA | APCA guidance |
|---|---|---|---|---|
| White text on #00191D | 18.15:1 | AAA | Lc -106.9 | Preferred for body text |
| Black text on #00191D | 1.15:1 | Fails | Lc 0.0 | Not readable |
| #00191D text on white | 18.15:1 | AAA | Lc 104.7 | Preferred for body text |
| #00191D text on black | 1.15:1 | Fails | Lc 0.0 | Not readable |
Tints and shades
A 50–950 scale built in OKLCH: the hue is held, lightness follows a Tailwind v4-like curve, and every step is kept inside the sRGB gamut. This color sits at step 950.
-
Step 50
50
#F2F6F7
oklch(97% 0.004 214.3)
-
Step 100
100
#E2ECEE
oklch(93.6% 0.011 211)
-
Step 200
200
#C9DDE1
oklch(88.4% 0.022 211)
-
Step 300
300
#A4C8CE
oklch(80.9% 0.039 208.8)
-
Step 400
400
#70ACB6
oklch(70.7% 0.064 209.1)
-
Step 500
500
#4597A4
oklch(63.1% 0.081 209.2)
-
Step 600
600
#1D818F
oklch(55.5% 0.088 209.2)
-
Step 700
700
#0A6D79
oklch(49% 0.082 208.4)
-
Step 800
800
#105963
oklch(42.7% 0.068 209)
-
Step 900
900
#184951
oklch(37.6% 0.053 210.1)
-
Step 950
950 (this color)
#00191D
oklch(19.5% 0.034 208.7)
#00191D with color blindness
Simulated with the Machado et al. (2009) model. ΔE is how far the color moves: below about 0.02 you would not notice a change.
| Vision | Seen as | Shift (ΔE) |
|---|---|---|
| Protanopia (no red cones) | #15181D | 0.031 |
| Deuteranopia (no green cones) | #11141D | 0.030 |
| Tritanopia (no blue cones) | #001B1A | 0.012 |
| Achromatopsia (no color) | #161616 | 0.034 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #00191D
#00191D
oklch(19.5% 0.034 208.7)
- #220F0C
#220F0C
oklch(19.6% 0.033 29.9)
Analogous
Neighbouring hues, 30° either side.
Split complementary
The two hues beside the complement (150° and 210°).
Triadic
Three hues spaced 120° apart.
Palettes and gradients that use #00191D
These curated palettes and gradients contain exactly #00191D. Open one to see the full color scheme around it.
Gradients
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Rich Navy #001219 ΔE 0.028
- Rich Black #0D1B2A ΔE 0.034
- Almost Black #070D0D ΔE 0.049
- Dark #1B2431 ΔE 0.068
- Jet #212529 ΔE 0.072
- Oxford Blue #1B263B ΔE 0.082
- Navy Blue #001146 ΔE 0.088
- Dark Navy #000435 ΔE 0.089
Use #00191D in your product
Turn it into light and dark UI roles checked for contrast, then export to Tailwind v4, shadcn/ui, CSS or design tokens.